LOW SUPERHEAT (evaporator outlet) Cold Suction Line/Compressor Location – Liquid Migration to Low Side During Off Cycle Compressor Oversized Cracked Diaphragm or Bellows- Automatic Expansion Valve Evaporator Fan Blades On or Running Backwards Excessive Accumulation of Oil in Evaporator Excessive Coil Frosting Excessive Subcooling External Equalizer Line Plugged or Capped Faulty TEV or Wrong Charge in Sensing Bulb Interrupted Pumpdown Long, Free Draining Suction Line to Compressor Overcharge of Refrigerant and/or Oil Oversized Condenser Oversized TEV Poor Bulb and Equalizer Location Poor Distribution Through Evaporator Circuits System Contamination TEV Seat/Liquid Line Solenoid Seat/Compressor Discharge Valve Leaks During Off Cycle TEV Superheat Setting Too low Uneven or Inadequate Evaporator Loading
